If I swap out the pierced butterfly, do I lose my gained damage bonus?

[Avo]

I usually swap it out after Tartarus, am I doing a bad?

[kid_zomb]

Hey, yes, if you switch Keepsakes and unequip the Pierced Butterfly, you will lose the bonus.

You can confirm this by checking the Boon Info screen (Back button on gamepad). The bonus should no longer be there once you un-equip the Keepsake.

Unequipping is a good option if your Tartarus run didn't go that well and you didn't rack up much of a damage bonus, but once you've sufficiently charged up your Pierced Butterfly it's generally good to stick with it for the duration of your run.

[Avo]

Thanks~!